Oil strainer



Aug. 28, 1928. l 682 655 J. S. ARMOUR OIL STRAINER Filed Sept. 26. 1925OOOOOO OO OO OO OO OO OO OO O /N VEN TOR Patented Aug. 28, 1928.

UNITED STATES PATENT OFFICE.

JOHN S. ARMOUB, OF HARRISON, OHIO, ASSIGNOR TO THE CAMPBELL HAUSFELDCOM- PANY, F HARRISON, OHIO, A CORPORATION 0F OHIO.

OIL STRAINER.

Application led September 26, 1925. Serial No. 58,941.

Oil used for fuel urposes, such as crude oil, fuel oil and the like,contains sediment, foreign substances and viscous ingredients, which, ifallowed to reach the burners, render the flames and heat irregular, andclog the burners, which is especially harmful in melting furnaces andother heat treating furnaces, in which it is desirable to maintain asteady heat.

I have therefore provided an improved strainer which arrests the passageof such sediment, viscous ingredients and foreign substances, and haveprovided means whereby the strainer may be freed from such arrestedsediment, ingredients and substances, and have further provided meanswhereby such arrested materials may be trapped and readily removed.

The invention will be further readily understood from the followingdescription and claim, and from the drawing, in which latter:

Fig. 1 is a plan view of my improved device.

Fig. 2 is a side elevation of the same, partly broken away.

Fig. 3 is a horizontal section of the same, taken in the plane of theirregular line 3-3 of Fig. 4.

Fig. 4 is an axial section of the same, taken on the line 4--4 of Fig.1; and,

Fig. 5 is an enlarged detail on the lastnamed section line.

My improved device may be placed at any desirable point in the oilfeeding line, and the propulsion of oil may be obtained by gravity,pressure or suction, the flow of the oil being in the direction of thearrows shown in Fig. 4. While I have instanced oil as the liquidbeingstrained, it is obvious that other liquids may be strained by my imroved device.

casing 11 is provided, which has a cavity 12, formed by the wall of thecasing and a baille wall 13, which latter separates said cavity from aninlet passage 14, communicating with the cavity by an opening 15 at itslower end, to direct the inflow of oil toward the lower end of thecavity. An inlet opening 16 has an inlet-pipe 17 connected therewith.

An outlet opening 21 has an outlet-pipe 22 connected therewith. Thisoutlet opening may be in a plug 23 threaded in a threaded socket 24 inthe casing.

A tube 25 is shown cylindrical, but may be of other cross-sectionalform. Its lateral walls are perforated, as shown by the holes 26. Itsend 27 in the cavity 12 is preferably imperforate. It is located in anopening 28 in the casing, and is provided with an annular vflange 29which rests on a shoulder 30 surrounding said opening 28. The flange maybe on a collar 31 to which the tube is fixed.

The plug 23 preferably has a socket 36, the lateral annular' wall 37 ofwhich is arranged to clamp the flange 29 upon the shoulder for providingan oil-tight joint. The interior of the tube 25 communicates freely withthe socket 36 through the collar 31.

A wiping strip 41 is received about said tube. It is shown in the formof a ring which surrounds said tube, preferably in close proximity tothe outer periphery of the tube. Its cross-sectional form correspondswith the cross-sectional form of the tube, instanced as annular. Thering has inner' scraping edges 42, 43, and is arranged' to scrape theouter periphery of the tube and free the same from sediment, ingredientsand substances, which may have lodged against the outer periphery of thetube, and to free the perforations from such obstructions.

The ring is shown provided with trunnions 45 received in slots 46 of afork 47, fixed to a rod 48, as by having the threaded end of said rodpass through a hole 49 in said fork, nuts 50, 51, at the respective endsof said hole clamping the fork to said rod. The rod extends to a pointoutside the cas ing, where it is provided with a handle 53, by means ofwhich it may be manipulated. An oil-tight packing is provided about therod, shown as a compressible packing 54, in

a socket between a` shoulder 56 surrounding the hole through which saidrod extends and a gland 57 about said rod in said socket, a cap 5Sthreaded to the wall of said socket compressing said packing.

The end of the cavity 12 is provided with an opening 61, closed by aplug 62, threaded to the wall of said opening, and provided with asocket 63, which forms a trap.

In assembling the parts, the tube 25 is inserted in the opening, and thering 41, the fork 47, and the nuts 50, 51, passed through the opening61, the ring being placed about the tube in the cavity and the trunnionsof the ring being placed in the fork, and the fork clamped between thenutsO, 5l, about the rod, which latter has been inserted through thehole in the shoulder 56.

The parts are of simple construction and are readily assembled.

During the passage of the oil in the direction of the arrows shown inFig. 4, the undesirable sediment, ingredients and substances arearrested by the strainer, lodging on the outer periphery of thestrainer. The strainer is readily freed from such undesirable materialsby the operation of the cleaning ring 41, which is caused to slidelengthwise of the tube in both directions, the scraping edges of thering scraping such undesirable materials from the tube. Theseundesirable materials descend into the socket 63 in the closing plug 62,below the iow of the oil passing through the perforations in the tube,and may be readily removed by removal of the plug.

The scraping ring may be operated at stated intervals, according to thecharacter of oil being used, or as the result of observation of theflame or heat, and the plug 62 may be removed and replaced at longerintei-vals.

A constant free flow of oil may be obtained by my improved device,resulting in constant flames and heat.

Having thus fully described my invcntion, what I claim as new, anddesire to se cure by Letters Patent, is:

A strainer comprising a casing having an inlet opening at its lowerportion, an outlet opening at its upper portion, a removable plug in.the latter, a perforated tube re ceived in said casing through saidoutlet opening and extending in said cavity above said inlet opening, awiping ring received about said tube and the pcrforations in said tube,a fork with which said ring has pivotal connections at opposite sides ofsaid tube, a rod connecting with said fork and extending outside saidcasing, a packing be-A tween said easing and said rod in which said rodhas axial movement for moving said wiping rin lengthwise of said tubeacross said per orations, said easing provided with an opening belowsaid tube and ring, and a removable plug to close said opening and forma trap in said casing below said inlet opening.

In testimony whereof I have hereunto signed my name.

JOHN S. ARMOUR.

